--- /dev/null
+;*****************************************************************************
+;* x86-optimized functions for interlace filter
+;*
+;* Copyright (C) 2014 Kieran Kunhya <kierank@obe.tv>
+;* Copyright (c) 2014 Michael Niedermayer <michaelni@gmx.at>
+;*
+;* This file is part of FFmpeg.
+;*
+;* FFmpeg is free software; you can redistribute it and/or modify
+;* it under the terms of the GNU General Public License as published by
+;* the Free Software Foundation; either version 2 of the License, or
+;* (at your option) any later version.
+;*
+;* FFmpeg is distributed in the hope that it will be useful,
+;* but WITHOUT ANY WARRANTY; without even the implied warranty of
+;* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+;* GNU General Public License for more details.
+;*
+;* You should have received a copy of the GNU General Public License along
+;* with FFmpeg; if not, write to the Free Software Foundation, Inc.,
+;* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+;******************************************************************************
+
+%include "libavutil/x86/x86util.asm"
+
+SECTION_RODATA
+
+SECTION .text
+
+%macro LOWPASS_LINE 0
+cglobal lowpass_line, 5, 5, 7
+ add r0, r1
+ add r2, r1
+ add r3, r1
+ add r4, r1
+ neg r1
+
+ pcmpeqb m6, m6
+
+.loop
+ mova m0, [r3+r1]
+ mova m1, [r3+r1+mmsize]
+ pavgb m0, [r4+r1]
+ pavgb m1, [r4+r1+mmsize]
+ pxor m0, m6
+ pxor m1, m6
+ pxor m2, m6, [r2+r1]
+ pxor m3, m6, [r2+r1+mmsize]
+ pavgb m0, m2
+ pavgb m1, m3
+ pxor m0, m6
+ pxor m1, m6
+ mova [r0+r1], m0
+ mova [r0+r1+mmsize], m1
+
+ add r1, 2*mmsize
+ jl .loop
+REP_RET
+%endmacro
+
+INIT_XMM sse2
+LOWPASS_LINE
+
+INIT_XMM avx
+LOWPASS_LINE